Function bloom_scene_attach_model

native/macos/src/lib.rs:2905–2947

(node_handle: f64, model_handle: f64, mesh_index: f64)

/// Copies the vertex/index data from the model into the scene node.
#[no_mangle]
pub extern "C" fn bloom_scene_attach_model(node_handle: f64, model_handle: f64, mesh_index: f64) {
    let eng = engine();
    let mi = mesh_index as usize;

    // Get model mesh data
    let model_data = match eng.models.models.get(model_handle) {
        Some(md) => md,
        None => return,
    };
    if mi >= model_data.meshes.len() { return; }
    let mesh = &model_data.meshes[mi];

    // Copy vertices and indices to scene node
    let vertices = mesh.vertices.clone();
    let indices = mesh.indices.clone();
    let base_color_tex = mesh.texture_idx;
    let normal_tex = mesh.normal_texture_idx;
    let mr_tex = mesh.metallic_roughness_texture_idx;
    let emissive_tex = mesh.emissive_texture_idx;
    let emissive_factor = mesh.emissive_factor;
    eng.scene.update_geometry(node_handle, vertices, indices);

    // Pipe PBR textures through to the scene node material so the
    // renderer's scene pipeline can sample them.
    if let Some(tex_idx) = base_color_tex {
        eng.scene.set_material_texture(node_handle, tex_idx);
    }
    if let Some(tex_idx) = normal_tex {
        eng.scene.set_material_normal_texture(node_handle, tex_idx);
    }
    if let Some(tex_idx) = mr_tex {
        eng.scene.set_material_metallic_roughness_texture(node_handle, tex_idx);
    }
    if let Some(tex_idx) = emissive_tex {
        eng.scene.set_material_emissive_texture(node_handle, tex_idx);
    }
    eng.scene.set_material_emissive_factor(
        node_handle,
        emissive_factor[0],
        emissive_factor[1],
        emissive_factor[2],
    );
}

// ============================================================
// Thread-safe staging (for async asset loading via Perry threads)